Unlock instant, AI-driven research and patent intelligence for your innovation.
A pulsed laser-arc hybrid welding method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A pulse laser and hybrid welding technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of narrow frequency range of arc and laser pulse modulation, and achieve easy implementation, simple welding process, and increased penetration Effect
Active Publication Date: 2017-10-20
CHINA-UKRAINE INST OF WELDING GUANGDONG ACAD OF SCI
View PDF10 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, this method is only suitable for high-strength steel pipes and is not suitable for aluminum alloy welding. At the same time, the pulse modulation frequency range of arc and laser is relatively narrow.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Carry out laser-arc hybrid welding on Ct3 steel with a thickness of 5mm, using Св-08Г2С welding wire with a diameter of Ø1.2 mm, the unit line energy during the welding process is 270-290J / mm, and the welding speed is 90m / h;
[0029] Use continuous Nd:YAG laser, power 3.0kW, current 180A, voltage 24V for welding, the appearance of the weld seam is as follows Figure 5 As shown, the joint section is as figure 2 shown;
[0030] Using pulsed Nd:YAG laser, average power 3.0kW (maximum power 4.4kW), frequency 200Hz; pulsed arc average current 160A, frequency 100Hz, voltage 22V for welding, the appearance of the weld is as follows Figure 6 As shown, the joint section is as image 3 shown;
[0031] Using pulsed Nd:YAG laser, average power 3.0kW (maximum power 4.4kW), frequency 100Hz, pulsed arc average current 160A, frequency 100Hz, voltage 22V for welding, the weld shape is as follows Figure 7 As shown, the joint section is as Figure 4 shown;
[0032] Comparing the ...
Embodiment 2
[0034] On the surfacing weld of АМг6 alloy with a thickness of 6mm, Св-АМг6 welding wire with a diameter of Ø1.2 mm is used for welding at a welding speed of 120m / h in an argon protective environment;
[0035] Continuous laser and pulsed arc composite welding are adopted, in which the laser power is 3.0KW, the average pulsed arc current is 180A, the voltage is 19V, and the frequency is 130Hz; the appearance of the weld seam is as follows Figure 9 as shown in a;
[0036] Pulse laser is used for welding, with an average power of 3.0KW, a maximum power of 4.4KW, and a pulse frequency of 130Hz; the appearance of the weld seam is as follows Figure 9 as shown in b;
[0037] Using pulsed laser and pulsed arc composite welding, the average laser power is 3.0KW, the maximum power is 4.4KW, the pulse frequency is 130Hz, the pulsed arc current is 180A, the voltage is 19V, and the pulse frequency is 130Hz; the weld shape is as follows Figure 9 as shown in c;
[0038] Continuous lase...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
power
aaaaa
aaaaa
diameter
aaaaa
aaaaa
Login to View More
Abstract
A pulse laser-arc composite welding method is characterized in that under the protection of protecting gas, pulse laser generated by a laser and pulse arcs generated by melting welding equipment act on the same position of a to-be-welded workpiece at the same time to form a common molten pool so as to weld the to-be-welded part, and the pulse modulation frequency of the pulse laser and the pulse arcs is 100-400Hz. By the pulse laser-arc composite welding method, metal overheat during welding can be effectively eliminated, welding speed can be increased to be not lower than laser welding speed, fusion depth is increased, and high-quality welding connectors are obtained. The method is simple in welding process, easy to implement and good in use effect.
Description
technical field [0001] The invention relates to a welding method, in particular to a pulse laser-arc compound welding method. Background technique [0002] MI pulse arc welding can control the droplet transfer and welding heat input by periodically changing pulse current to achieve a good welding process. The disadvantages of this method are: the quality of the weld cannot be ensured when welding at high speed, and a large penetration depth can be obtained. The laser-arc hybrid welding method is to organically combine the two heat sources of the laser and the arc, and improve the absorption of laser energy and the stability of the arc through the interaction between the laser and the arc. [0003] U.S. Patent US6596969B1 discloses a laser-arc hybrid welding method, which uses continuous laser and pulsed arc for hybrid welding. The current pulse can be DC pulse or AC pulse, and the interval between pulses is 0.1ms. Under the stable arc discharge, a larger penetration depth ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More